Psychometric Properties of revised Version Tehran- Stanford-Binet intelligence scale in Diagnosis of Learning Disabilities

Present research aimed to study psychometric properties of revised version of Tehran- Stanford-Binet intelligence scale in diagnosis of children with learning disabilities.

Methodology was descriptive - survey. Population was all students with learning disability and normal students in grades 1-3 in elementary schools of Makoo city. 50 students with learning disabilities were selected by purposeful sampling and diagnostic interview and 50 normal students were selected thourogh match students. data were collected using 5th version of Tehran- Stanford-Binet intelligence scale and was analyzed by correlation and psychometric analysis of reliability and validity.

Results indicated that this test have desirable psychometric properties in internal homogeneity, stability coefficient, diagnostic and criterion validity in diagnosis of learning disabilities. subtests of verbal active memory, nonverbal knowaldege, verbal knowaldege, nonverbal fluid reseaning, nonverbal active memory have desirable diagnostic validity. also active memory and knowaldege are conculsive factors in diagnosis of learning disabilities.

Results provide some evidence that revised version Tehran- Stanford-Binet intelligence scale is an appropriate tool in diagnosis of children with learning disabilities. Therefore, it is recommended to use this tool in acurate and valid diagnosis of learning disabilities.